<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 头部搜索区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            clearable
            placeholder="请输入内容"
            v-model="queryInfo.query"
            @keyup.native.enter="getGoodList"
            @clear="getGoodList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="8">
          <el-button type="primary" @click="goAddGoodsPage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 表格区域 -->
      <el-row>
        <el-table :data="goodList" border stripe>
          <el-table-column type="index"></el-table-column>
          <el-table-column label="商品名称" prop="goods_name"></el-table-column>
          <el-table-column
            label="商品价格(元)"
            prop="goods_price"
            width="95px"
          ></el-table-column>
          <el-table-column
            label="商品重量"
            prop="goods_weight"
            width="70px"
          ></el-table-column>
          <el-table-column label="创建时间" prop="add_time" width="140px">
            <template slot-scope="scope">
              {{ scope.row.add_time | dateFormat }}
            </template>
          </el-table-column>
          <el-table-column label="操作" width="130px">
            <template slot-scope="scope">
              <el-button
                size="mini"
                type="primary"
                icon="el-icon-edit"
                @click="goEditGoodsPage(scope.row.goods_id)"
              ></el-button>
              <el-button
                size="mini"
                type="danger"
                icon="el-icon-delete"
                @click="removeGoodById(scope.row.goods_id)"
              ></el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-row>

      <!-- 分页区域 -->
      <el-row>
        <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-size="queryInfo.pagesize"
          :page-sizes="[10, 20, 50, 100]"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
        >
        </el-pagination>
      </el-row>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 总数据条数
      total: 0,
      // 总数据列表
      goodList: []
    }
  },
  created() {
    this.getGoodList()
  },
  methods: {
    async getGoodList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败!')
      }
      this.total = res.data.total
      this.goodList = res.data.goods
    },
    // 监听 分页功能 每页显示条数改变
    handleSizeChange(newPage) {
      // 修改当前页面要显示几条数据
      this.queryInfo.pagesize = newPage
      // 从新发送请求获取数据
      this.getGoodList()
    },
    // 监听 分页功能 当前页改变
    handleCurrentChange(newPage) {
      // 当页码改变的时候
      this.queryInfo.pagenum = newPage
      // 从新发送请求获取数据
      this.getGoodList()
    },
    // 监听 删除商品的事件
    async removeGoodById(id) {
      const isConfirm = await this.$confirm(
        '此操作将永久删除该文件, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (isConfirm !== 'confirm') {
        return this.$message.info('删除操作已取消!')
      }
      const { data: res } = await this.$http.delete('goods/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除商品失败!')
      }
      this.$message.success('删除商品成功!')
      this.getGoodList()
    },
    // 监听 添加商品的btn按钮
    goAddGoodsPage() {
      this.$router.push('/goods/add')
    },
    // 监听 编辑商品的btn按钮
    goEditGoodsPage(id) {
      this.$router.push('/goods/edit' + '?id=' + id)
    }
  }
}
</script>

<style lang="less" scoped></style>
